Picking areas of a texture on a mesh

I found a really nice earth texture. In the area of the United States I added part of a map to test it out. It seems to work ok but check out what happens when you hover over Texas. It's detecting yellow as white.

http://www.doresoftware.com/misc/globe.zip

Extract to a folder, run globe.bb

Use WASD or arrow keys to turn the globe.